An analysis of effects of coal jigging after changes in the grain composition of a feed

In the article the results of coal jigging were presented. For four versions of enrichment - with one, two or three jigs - optimal density of partition in jigs was determined with various desired quality of a fi nal concentrate. The substantial difference in conditions of enrichment in individual versions of a technological system refers to various widths of the feed grain classes. Then enrichment forecasts were made at optimal partition widths in jigs, but with changes in mass contents of grain classes of a feed for jigs. Relative production values were given for the considered enrichment cases.